Non-invasive blood pressure technology reliable during surgery
22 October 2005
Danvers, Mass, USA. Medwave has announced that a study published in
Anesthesia & Analgesia shows that its Vasotrac non-invasive blood pressure
monitor is a reliable alternative to cuff and direct arterial measurements
during routine surgical cases.
The study (1) was conducted at Children's Hospital of
Boston and concluded that, "Our data suggest that the Vasotrac system
correlates closely with intra-arterial blood pressure monitoring in
anesthetized children under normotensive conditions in the prone position
and during pharmacologic-induced hypotension." Based on these results, it
was also concluded that the Vasotrac is a reliable alternative to cuff and
direct arterial blood pressure measurement during routine surgical cases.
In a previous report of children after congenital cardiac surgery,
investigators at Children's Hospital of Boston had demonstrated agreement
between the Vasotrac measurements and those obtained from direct intra-
arterial blood pressure monitoring, but that comparison was performed once
patients were in stable condition after cardiac surgery.
This newly published study was performed to test the Vasotrac under wide
blood pressure fluctuations, surgical blood loss, and in a different patient
position. The Vasotrac monitor was evaluated against direct intra-arterial
blood pressure measurement in adolescent children during scoliosis surgery.
This study provides concrete data that the Vasotrac works in challenging
patient populations and is a reliable alternative to cuff and direct
arterial BP measurements during routine surgical cases.
Tim O'Malley, President and CEO of Medwave, Inc., stated, "Medwave's
strategy of supporting studies associated with our technology, specifically
in difficult-to-monitor patient types or environments, has been very
successful. We have had studies presented and published regarding the use of
our technology with paediatric and obese patients, and in emergency medicine
environments. All completed studies thus far have rendered positive results
in which our technology has performed extremely well. Again, in this
important new study that was conducted at Children's Hospital in Boston, the
results are very favourable, indicating further that our sensor-based blood
pressure technology is the most innovative and advanced, non-invasive method
of obtaining blood pressures in a multitude of settings and across a wide
spectrum of patient types."
1. Mary E. McCann, MD, David Hill, MBBS, Kristin C.
Thomas, MS, RN, David Zurakowski, PhD, and Peter Laussen, MBBS. A comparison
of radial artery blood pressure determination between the Vasotrac device
and invasive arterial blood pressure monitoring in adolescents undergoing
scoliosis surgery. Anesthesia & Analgesia: October 2005.
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